Uncertainty quantification for neutrino opacities in corecollapse supernovae and neutron star mergers
Abstract
We perform an extensive study of the correlations between the neutrinonucleon inverse mean free paths (IMFPs) and the underlying equation of states (EoSs). Strong interaction uncertainties in the neutrino mean free path are investigated in different density regimes. The nucleon effective mass, the nucleon chemical potentials, and the residual interactions in the medium play an important role in determining neutrinonucleon interactions in a densitydependent manner. We study how the above quantities are constrained by an EoS consistent with (i) nuclear mass measurements, (ii) protonproton scattering phase shifts, and (iii) neutron star observations. We then study the uncertainties of both the charged current and the neutral current neutrinonucleon inverse mean free paths due to the variation of these quantities, using the HartreeFock+random phase approximation method. Finally, we calculate the Pearson correlation coefficients between (i) the EoSbased quantities and the EoSbased quantities; (ii) the EoSbased quantities and the IMFPs; (iii) the IMFPs and the IMFPs. We find a strong impact of residual interactions on neutrino opacity in the spin and spinisospin channels, which are not well constrained by current nuclear modelings.
 Publication:

Physical Review C
 Pub Date:
 January 2023
 DOI:
 10.1103/PhysRevC.107.015804
 arXiv:
 arXiv:2207.05927
 Bibcode:
 2023PhRvC.107a5804L
 Keywords:

 Nuclear Theory
 EPrint:
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